Overview

Open4357-C is an LPC development board designed for the LPC4357FET256 / LPC4357JET256 microcontroller, consists of the mother board and the MCU core board Core4357.

The Open4357-C supports further expansion with various optional accessory boards for specific application. The modular and open design makes it the ideal for starting application development with NXP LPC series microcontrollers.

What's on the mother board

1. MCU core board connector: for easily connecting the MCU core board
2. SGPIO connector: for connecting camera module
3. USB interface 1: USB1 FS
4. USB interface 2: USB0 HS
5. USB interface 3: converts to UART through an onboard USB to UART convertor PL2303
6. UART3 interface: easily connects to RS232, RS485, USB TO 232, etc.
7. I2C0 | I2C1 interface: easily connects to I2C peripherals such as I/O expander (PCF8574), EEPROM (AT24Cxx), etc.
8. CAN1 interface: for connecting CAN module
9. CAN0 interface: for connecting CAN module
10. UART1 interface: easily connects to RS232, RS485, USB TO 232, etc.
11. ADC+DAC interface: for ADC/DAC testing
12. LCD interface 1: for connecting 7inch LCD
13. SDIO interface: for connecting Micro SD module, features much faster access speed rather than SPI
14. LCD interface 2: for connecting 4.3inch LCD
15. Capacitive touch screen interface: for connecting capacitive touch screen
16. SSP interface: easily connects to SPI peripherals such as DataFlash (AT45DBxx), SD card, MP3 module, etc.
17. ETH interface: for connecting ETH module
18. I2S0 interface: for connecting I2S modules such as Audio module, etc.
19. ONE-WIRE interface: easily connects to ONE-WIRE devices (TO-92 package), such as temperature sensor (DS18B20), electronic registration number (DS2401), etc.
20. 5V DC jack
21. 5V/3.3 V power input/output: usually used as power output, also common-grounding with other user board
22. MCU pins connector: all the I/O ports are accessible on expansion connectors for further expansion
23. JTAG interface: for debugging/programming
24. AMS1117-3.3: 3.3V voltage regulator
25. LM3625-H: USB power management device
26. XPT2046 (on bottom side): touch screen controller
27. PL2303TA (on bottom side): USB TO UART convertor
28. Power indicator
29. USB1 VBUS LED
30. USB0 VBUS LED
31. PL2303TA TX-LED / RX-LED, UART transmitting/receiving indicator
32. LEDs: convenient for indicating I/O status and/or program running state
33. Joystick: five positions
34. User key: convenient for I/O input and/or interact with running code
35. Reset button
36. Power switch
37. BOOT jumper
38. VBAT jumper
39. USB1 FS jumper
40. USB0 HS jumper
41. USB TO UART jumper
42. LEDs jumper
43. User key jumper
44. Joystick jumper

What's on the Core4357

1. LPC4357FET256 / LPC4357JET256:the LPC ARM Cortex-M4/M0 dual-core microcontroller:
   • Core: Cortex-M4 processor, 204MHz Max
   • Core: Cortex-M0 coprocessor, 204MHz Max
   • Package: LBGA256
   • I/Os: 164
   • Memories: FLASH total 1M, SRAM total 136kB, ROM 64kB, E2PROM 16kB, OTP memory 64 bit
   • Interfaces:
     • 1 x SPIFI, 1 x 10/100T MAC
     • 1 x High-speed USB2.0 Host/Device/OTG
     • 1 x High-speed USB 2.0 Host/Device
     • 1 x 550 UART, 3 x 550 USART, 1 x IrDA
     • 2 x CAN 2.0, 2 x SSP, 1 x SPI, 1 x Fast-mode Plus I2C
     • 1 x standard I2C-bus, 2 x I2S, 1 x EMC, 1 x LCD controller
     • 1 x SD/MMC, 1 x PWM, 1 x QEI, 1 x 10-bit DAC, 2 x 10-bit ADC
2. QSPI FLASH solder pads, for soldering external Flash if required
3. MT48LC8M32B2, 256M Bit SDRAM
4. SST39VF3201, 32M Bit NorFlash
5. K9F1G08U0B, 1G Bit NandFlash
6. 12M crystal oscillator
7. 32.768K crystal, for internal RTC with calibration
8. MCU pins expander, VCC, GND and idle I/O ports are accessible on expansion connectors for further expansion

Photos

Open4357-C development board

Open4357-C development board

Open4357-C development board back view

Open4357-C mother board

MCU core board Core4357

MCU core board Core4357

Connecting to various peripherals

Connecting to USB device

4.3inch lcd emWin demo1

4.3inch lcd emWin demo2

4.3inch lcd emWin demo3

4.3inch lcd emWin demo4

7inch lcd emWin demo1

7inch lcd emWin demo2

7inch lcd emWin demo3

7inch lcd emWin demo4

Connecting to RS232 Board

Connecting to RS485 Board

Connecting to CAN Board

Connecting to 8 Push Buttons

Connecting to 5 IO Keypad

Connecting to AD Keypad

Test Board on the AD/DA port

Connecting to FRAM Board

Multi I2C peripheral Module connected to the I2C bus

Connecting to Micro SD Storage Board

Connecting to DataFlash Board

Connecting to NRF24L01 RF Board

Connecting to Ethernet Board

Connecting to VS1003B MP3 Board

Connecting to UDA1380 Board

Connecting to any accessory board you need

Note:
The Open4357-C supports programming via UART bootloader
The Open4357-C does NOT integrate any debugging function, a debugger is required.

JTAG/SWD interfaces

The figure 1, and 2 show the header pinouts of JTAG/SWD interface

Figure 1. JTAG Header Pinout

Figure 2. SWD Header Pinout

Development Resources

• Related software (KEIL etc.)
• Examples in C
• Schematic (PDF)
• LPC Cortex-M3/M4 development documentations (Datasheet etc.)

Wiki: www.waveshare.com/wiki/Open4357-C

Note: the camera and capacitive touch screen drivers are not provided for the moment.